Question

The sum of three numbers which are consecutive terms of an ap is 21. if the second number is reduced by 1 and the third is increased by 1 three consecutive terms of gp results. find these numbers

Answer 1

x + x+1(-1)+x +2(+1)=21
=x + x -1 +x +2=21
=3x -1+2=21
=3x+1=21
=3x=21+1
=3x=22
=x=22/3